001package model.entity;
002
003import lombok.Getter;
004import lombok.Setter;
005import org.hibernate.annotations.DynamicUpdate;
006import org.hibernate.annotations.LazyCollection;
007import org.hibernate.annotations.LazyCollectionOption;
008
009import javax.persistence.*;
010import java.io.Serializable;
011import java.time.Instant;
012import java.util.HashMap;
013import java.util.List;
014import java.util.Map;
015
016/**
017 * Entità rappresentante un post
018 */
019@Entity
020@DynamicUpdate
021public class Post implements Serializable {
022    public enum Type {TEXT, IMG}
023
024    @Getter @Setter
025    @Id @GeneratedValue(strategy = GenerationType.IDENTITY)
026    protected Integer id;
027
028    @Setter @Getter
029    @Column(length = 255, nullable = false)
030    protected String title;
031
032    @Getter @Setter
033    @Column(columnDefinition = "TEXT", nullable = false)
034    protected String content;
035
036    @Setter @Getter
037    @Column(nullable = false) @Enumerated(EnumType.STRING)
038    protected Type type;
039
040    @Getter
041    @Column(nullable = false, updatable = false, insertable = false)
042    protected Instant creationDate; //generato da sql
043
044    @Getter
045    @Column(name = "votes", nullable = false, insertable = false, updatable = false)
046    protected Integer votesCount;
047
048    @OneToMany(mappedBy="post")
049    @LazyCollection(LazyCollectionOption.EXTRA)
050    protected List<Comment> comments;
051    public int getCommentCount(){
052        return comments == null ? 0 : comments.size();
053    }
054
055    @Getter @Setter
056    @ManyToOne(fetch = FetchType.LAZY, optional = false)
057    protected Section section;
058
059    @Getter @Setter
060    @ManyToOne(fetch = FetchType.LAZY, optional = false)
061    protected User author;
062
063    @OneToMany(mappedBy="post")
064    @MapKeyJoinColumn(name="user_id", updatable = false, insertable = false)
065    protected Map<User, PostVote> votes = new HashMap<>();
066
067    /**
068     * Ottieni il voto di un utente al post in questione (o <pre>null</pre> se il voto non è presente)
069     * @param user Riferimento all'utente
070     * @return Un oggetto {@link PostVote}
071     */
072    public PostVote getVote(User user){
073        return votes.get(user);
074    }
075
076    public Post(){}
077
078    @Override
079    public boolean equals(Object o) {
080        if (this == o) return true;
081        if (!(o instanceof Post)) return false;
082        Post post = (Post) o;
083        return id != null && id.equals(post.id);
084    }
085
086    @Override
087    public int hashCode() {
088        return getClass().hashCode();
089    }
090}